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mtd: nand: pxa3xx: fix build on ARM64 

In preparation to enable ARCH_MMP on ARM64, a couple of fixes are needed
to build the pxa3xx_nand driver:

Legacy DMA will only used on ARM, so also make it condtional on
CONFIG_ARM.
__raw_{read,write}sl are not available on ARM64 or generically, so use
the readsl/writesl variants instead. Somewhat inconsistently,
{read,write}sl are inherently non-swapping with the generic version
using __raw_{read,write}l.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
[Brian: added one more __raw_readsl -> readsl]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Rob Herring 2015-04-30 15:17:47 -05:00 committed by Brian Norris
parent afca11ec13
commit ce914e6b26
1 changed files with 10 additions and 11 deletions
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21
drivers/mtd/nand/pxa3xx_nand.c
View File

@ -29,7 +29,7 @@
#include <linux/of_device.h>
#include <linux/of_mtd.h>
#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
#if defined(CONFIG_ARM) && (defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP))
#define ARCH_HAS_DMA
#endif
@ -496,7 +496,7 @@ static void drain_fifo(struct pxa3xx_nand_info *info, void *data, int len)
* the polling on the last read.
*/
while (len > 8) {
__raw_readsl(info->mmio_base + NDDB, data, 8);
readsl(info->mmio_base + NDDB, data, 8);
ret = readl_relaxed_poll_timeout(info->mmio_base + NDSR, val,
val & NDSR_RDDREQ, 1000, 5000);
@ -511,7 +511,7 @@ static void drain_fifo(struct pxa3xx_nand_info *info, void *data, int len)
}
}
__raw_readsl(info->mmio_base + NDDB, data, len);
readsl(info->mmio_base + NDDB, data, len);
}
static void handle_data_pio(struct pxa3xx_nand_info *info)
@ -520,14 +520,14 @@ static void handle_data_pio(struct pxa3xx_nand_info *info)
switch (info->state) {
case STATE_PIO_WRITING:
__raw_writesl(info->mmio_base + NDDB,
info->data_buff + info->data_buff_pos,
DIV_ROUND_UP(do_bytes, 4));
writesl(info->mmio_base + NDDB,
info->data_buff + info->data_buff_pos,
DIV_ROUND_UP(do_bytes, 4));
if (info->oob_size > 0)
__raw_writesl(info->mmio_base + NDDB,
info->oob_buff + info->oob_buff_pos,
DIV_ROUND_UP(info->oob_size, 4));
writesl(info->mmio_base + NDDB,
info->oob_buff + info->oob_buff_pos,
DIV_ROUND_UP(info->oob_size, 4));
break;
case STATE_PIO_READING:
drain_fifo(info,
@ -1628,8 +1628,7 @@ static int alloc_nand_resource(struct platform_device *pdev)
info->pdev = pdev;
info->variant = pxa3xx_nand_get_variant(pdev);
for (cs = 0; cs < pdata->num_cs; cs++) {
mtd = (struct mtd_info *)((unsigned int)&info[1] +
(sizeof(*mtd) + sizeof(*host)) * cs);
mtd = (void *)&info[1] + (sizeof(*mtd) + sizeof(*host)) * cs;
chip = (struct nand_chip *)(&mtd[1]);
host = (struct pxa3xx_nand_host *)chip;
info->host[cs] = host;